Pictures of Celebrities and Models on Twitter Jan. 10, 2012

This week on Twitter, we caught up with some of our fashionable favorites on the set and out at play. Peter Som shared a behind-the-scenes look at the photo shoot for his Pre-Fall lookbook, while Rachel Roy took in a basketball game with her daughter. Meanwhile, Cat Deeley got silly during the tryouts for So You Think You Can Dance, and Jessica Alba had a very special visitor at her office. Click through to see all of this week's fashionable photos now!